Is "the child" a boy or a girl? How does the "over a year old" child feel about the 'dad' who has been brought into his/her life?
What are you plans for "the child's" life?
Sorry if I'm not answering your questions on how you should resolve your love-life... but I keep getting distracted by the child you have. Funny how I see the child as being somehow... well... more important...
Surely you can understand... right?
"The weakest soul, knowing its own weakness, and believing this truth that strength can only be developed by effort and practice, will, thus believing, at once begin to exert itself, and, adding effort to effort, patience to patience, and strength to strength, will never cease to develop, and will at last grow divinely strong."
- James Allen